Handcuff.



\X/IT IEEE EEm G. A. CARNEY.

HANDGUFF.

' (APPLICATION FILED 00-1.. 4, 1911 Patented Feb. 20, 1912.

UNITED STATES PATENT OFFICE.

GEORGE A. CARNEY, OF BOSTONhMASSACHUSETTS, ASSIGNOR OF ONE-HATE TO GEORGE H. LITTLE-FIELD, F BOSTON, MASSACHUSETTS.

Hartman.

To all whom 'it may concern;

Be it known that I, GEORGE A. CARNEY, of Boston, in the county of Suffolk and Commonwealth of Massachusetts, have invented a new and useful Improvement in Handcuffs, of which the following is a specification.

My invention relates more particularly to means for locking and unlocking the handcufl and it has been the special object of my invention to provide an automatic locking arm which need not be positively locked in orderto keep it' in place when the device is not in use, it being provided with means whereby it may be securely held in place when not in use and yet may be instantly and easily opened in order to admit the wrist.

7 My in x' ention may be best understood by reference to the accompanying drawing, in

which '7 Figurel is'a side view of the device, the lockingfarm being shown in operative position. Fig. 2 is an-end View. Fig. 3 is a side View with the lower part of .the casing cut away toshow the interior of the mechanism.

Referring now more particularly to the drawing, 1 is a casing which is provided with an upwardly extending arm 2 which is divided so that the locking arm 3 may be mounted by the pivot 4 between. itsoextremitie's.

5 is a key-hole in the casing. The looking arm 3 is provided with a serrated edge 6,- adapted normally to engage the end of the arm 7 of the pawl 8 and prevent its withdrawal. The pawl 8 is actuated by the spring 9 to move upon the pivot 10. His a hole in the case 1, throu h which passes a ring 12 attaching the han cuff to its mate. It will be seen that the spring 9 normally forces the pawl 8 upward, causing its arm 7 to contact with the-sto 13, which prevents its further movement in that direction. The teeth of the serrated edge 6 are such that when in o erative contact with the end of the arm 7 o the pawl-8 the outward movement of the locking arm 3 is prevented by the contact of'the arm 7 with the stop 13. By the-insertion of a key inv the keyhole5, however, the pawl 8 maybe actuated against the force of. the spring 9, thus swinging the arm 7 out of contact with the 55. serrated edge 6 of the locking arm 3and Specification of Letters Patent.

Application filed October 4, 1911. Serial No. 652,881.

Patented Feb. 20, 1912.

permitting the locking arm 3 to be withdrawn into an open position. It is apparent, however, since the serrated edge 6 of the locking arm 3 may be always moved inward across the top of the arm 7 until it passes through the divided arm 2 of the casing 1, as shown by the dotted lines in Fig. 3, the handcuff may thus be-readily opened at any time when not on the wrist of a wearer by a continuation of the movement of the locking arm 3 so that fit swings around a full circle.

It is apparent that my handcuffs are compact, simple, easily operable and adjustable 'to the size of the wrists of the wearer and have the further advantage that they will not fly open when carried in the pocket, thus causing inconvenience to the person carryingthem, as is the' case with the ordinary handcuif, which must be kept locked to render 1t compact and to avoid inconvenience when carried in the pocket. To be able to dispense. with a key in opening my handcuffs when they 'are not attached to the wrists of a wearer and yet are in a measure locked is obviously of great advantage.

It is evident that any desirably complicated keyoperated means for actuating the pawl 8 may be used in connection with my device.

Having thus fully described my invention what I claim is 1. In a handcufl the combination of a fixed part, a locking means in said fixed part and a locking arm pivotally mounted on said fixed part in a manner whereby it may be revolved so as to be brought into or casing, an upwardly extending arm on said i casing, a locking arm, means for pivotally mounting said locking-arm on said up-- wardly extending arm on said casing in a manner whereby saidlocking arm maybe revolved and means in said casing for looking said locking'arm.

4. In a handcufi' a locking arm provided with a serrated edge, means for pivotally mounting said locking arm in a manner whereby it may be revolved, a pawl adapted to engage the serrated edge of said looking arm and intermesh therewith, a stop to limit the movement of said pawl in one direction, thereby preventing its movement out'of mesh with said serrated edge of said 10 locking arm and a spring adapted vto actuate said pawl into 0 erative relation rrith said member provide with a serrated edge.

GEORGE A. CARNEY.

Witnesses:

EDWIN P. FITZGERALD, MAY E. OCONNELL; 

